Arc based adaptive control system for an electrosurgical unit

an electrosurgical generator and adaptive control technology, applied in the field of electrosurgical generator systems and methods, can solve problems such as particularly problematic energy arcing

Active Publication Date: 2010-01-26
COVIDIEN AG
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Energy arcing is particularly problematic for sensed feedback control systems since the systems attempt to adjust to the rapidly occurring changes in tissue properties caused by arcing.

Method used

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  • Arc based adaptive control system for an electrosurgical unit
  • Arc based adaptive control system for an electrosurgical unit
  • Arc based adaptive control system for an electrosurgical unit

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Embodiment Construction

[0014]Particular embodiments of the present disclosure are described hereinbelow with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail to avoid obscuring the present disclosure in unnecessary detail. Those skilled in the art will understand that the method according to the present disclosure may be adapted to monitor use with either monopolar or bipolar electrosurgical systems.

[0015]FIG. 1 is a schematic illustration of an electrosurgical system according to the present disclosure. The system includes an electrosurgical instrument 10 having one or more electrodes for treating tissue of a patient P. The instrument 10 may be either a monopolar type including one or more active electrodes (e.g., electrosurgical cutting probe, ablation electrode(s), etc.) or a bipolar type including one or more active and return electrodes (e.g., electrosurgical sealing forceps). Electrosurgical RF energy is supplied ...

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Abstract

A system and method for performing electrosurgical procedures are disclosed. The system includes an electrosurgical generator adapted to supply electrosurgical energy to tissue in form of one or more electrosurgical waveforms having a crest factor and a duty cycle. The system also includes sensor circuitry adapted to measure impedance and to obtain one or more measured impedance signals. The sensor circuitry is further adapted to generate one or more arc detection signals upon detecting an arcing condition§. The system further includes a controller adapted to generate one or more target control signals as a function of the measured impedance signals and to adjust output of the electrosurgical generator based on the arc detection signal. An electrosurgical instrument is also included having one or more active electrodes adapted to apply electrosurgical energy to tissue.

Description

BACKGROUND[0001]1. Technical Field[0002]The present disclosure relates to electrosurgical generators. More particularly, the present disclosure relates to a system and method for controlling output of an electrosurgical generator. The electrosurgical generator includes a sensing feedback control system and an arc-based adaptive control system which adjusts output in response to arcing.[0003]2. Background of Related Art[0004]Energy based tissue treatment is well known in the art. Various types of energy (e.g., electrical, ultrasonic, microwave, cryo, heat, laser, etc.) are applied to tissue to achieve a desired result. Electrosurgery involves application of high radio frequency electrical current to a surgical site to cut, ablate, coagulate send or otherwise seal tissue. In monopolar electrosurgery, a source or active electrode delivers radio frequency energy from the electrosurgical generator to the tissue and a return electrode carries the current back to the generator. In monopola...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): A61B18/10
CPCA61B18/1206A61B2018/1213A61B2018/00875A61B2018/00726
Inventor WHAM, ROBERT H.
Owner COVIDIEN AG
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